Home / 21,969.32-30,317.51-11,897.52

Finding the Fourth Proportional to 21,969.32, 30,317.51 and 11,897.52

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Solution

The fourth proportional to 21,969.32, 30,317.51 and 11,897.52 is: 16,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.32 : 30,317.51 = 11,897.52 : x
  2. Step 2: Convert to fraction form
    21,969.32/30,317.51 = 11,897.52/x
  3. Step 3: Cross multiply
    21,969.32x = 30,317.51 × 11,897.52
  4. Step 4: Simplify right side
    21,969.32x = 360,703,122.09
  5. Step 5: Solve for x
    x = 360,703,122.09/21,969.32
  6. Step 6: Final answer
    x = 16,418.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.